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6. STOCK-BASED COMPENSATION (Tables)
6 Months Ended
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Stock option activity
Outstanding Options
Under the 2006 Plan
  Shares     Weighted
Average
Exercise price
Per Common
Share
  Weighted
Average
Remaining
Contractual
Life
(in years)
  Aggregate
Intrinsic
Value
 
                     
Balance, December 31, 2016     375,626     $6.82            
Granted     184,523     6.30            
Balance, June 30, 2017     560,149     6.65   5.79   $ 793,610  
Exercisable at June 30, 2017     205,000     7.51   0.43     228,400  
Restricted Stock Awards activity
          Weighted-Average      
          Remaining      
          Contractual     Weighted-Average
    RSA's     Term (Years)     Fair Value
RSA's unvested at December 31, 2016     573,145             $6.18
Changes during the period                    
Granted     681,448             $5.98
Vested     (784,242 )           $6.02
RSA's unvested at June 30, 2017     470,351       0.86     $6.12